You have to look at the Modules in PowerCLI 6.5.

When you wrote your Scripts with the PowerShell ISE you had to load the PSSnapins before.

Check which Module loaded via

Get-Module -Name VMware*

In 6.5 there are no longer PSSnapins! Now there are only Modules!

Before PowerCLI 6.5 you added your Snapins via

Add-PSSnapin VMware.VimAutomation.Core

In 6.5 you have to load the Modules one bye one via

Import-Module VMware.VimAutomation.CoreImport-Module VMware.VimAutomation.VdsImport-Module VMware.VimAutomation.CloudImport-Module VMware.VimAutomation.PCloudImport-Module VMware.VimAutomation.Cis.CoreImport-Module VMware.VimAutomation.StorageImport-Module VMware.VimAutomation.HorizonViewImport-Module VMware.VimAutomation.HAImport-Module VMware.VimAutomation.vROpsImport-Module VMware.VumAutomationImport-Module VMware.DeployAutomationImport-Module VMware.ImageBuilderImport-Module VMware.VimAutomation.License

Or you can load all Modules via

Get-Module -ListAvailable VMware | Import-Module

Otherwise you start the VMware Script witch is located under (default)

“C:\Program Files (x86)\VMware\Infrastructure\PowerCLI\Scripts\Initialize-PowerCLIEnvironment.ps1”